I am trying to AUTOLOAD the “nvidia-drm” driver which is required to detect display is connected or not via /sys/class/drm. So, If I load nvidia-drm during boot then I can see the X11 server failed to start. Fatal server error: [ 15.693] (EE) no screens found(EE) Please check xorg log for re…

Hi @DaneLLL , I figured out problem in our software actually this is the actual reason for failure of X11 server. [ 19.632060] fb0: switching to nvidia-drm from simple [ 19.700091] nv_platform 13800000.display: [drm] fb0: nvidia-drmdrmfb frame buffer device In our bsp I was getting this problem w…

Hi, If you don’t need Ubuntu desktop, would suggest develop your use-case based on this rootfs: Root File System — NVIDIA Jetson Linux Developer Guide 1 documentation It is the rootfs without Ubuntu GUI.

Hi @DaneLLL , Thanks for the response, but I just want to know when the nvidia_drm driver is not loaded. Then I have not seen any issue loading the X11 server, but when I load the nvidia_drm driver, it fails to start the X11 server. What is wrong here, and what is missing? I was not able to figure…

Hi, X11 and nvidia-drm cannot be run simultaneously. Please run either X11 or nvidia-drm, as suggested in Accelerated GStreamer — NVIDIA Jetson Linux Developer Guide 1 documentation

Hi @DaneLLL , Thanks for the help. I think i got your point. but in my setup I need find out HDMI display is connected or not before any X11 server launches also without nvidia-drm driver. So, can you suggest a way to do so in Jetson Orin nano platform. If I am able to know display is connected or…

udevadm monitor --env udev shall be able to notice display hotplug when DRM is enabled.

Hi @WayneWWW , Thanks for the suggestion but this didn’t work for me. udevadm monitor --env monitor will print the received events for: UDEV - the event which udev sends out after rule processing KERNEL - the kernel uevent I can’t see more info then this, can you suggest any other like sysfs en…

Hi, Please hotplug the HDMI out. You shall see the messages like: UDEV [171.821483] change /devices/platform/external-connection/external-connection:disp-state/extcon/extcon0 (extcon) ACTION=change DEVPATH=/devices/platform/external-connection/external-connection:disp-state/extcon/extcon0 SUBSY…

Hi @DaneLLL , I found this statement little confusing for me. As now i have install the latest Jetpack and able to see nvidia-drm driver properly loaded and X11 server also working well. In L4t_release version: ubuntu@ubuntu:~$ lsmod | grep drm nvidia_drm 94208 1 nvidia_modeset 1…

Failed to start X11 server in Jetson Orin Nano

Robotics & Edge Computing Jetson Systems Jetson Orin Nano

DaneLLL February 6, 2025, 11:41am 11

Hi,
It’s uncertain what the issue is. We don’t support X11 + DRM. If you use only DRM in your use-case, please use minimum rootfs and run the command after booting:

$ sudo modprobe nvidia-drm modeset=1

This is a clean only-DRM system.

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Failed to start X11 server in Jetson Orin Nano

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